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<h1 class="title">QXmlEntityResolver Class Reference</h1>
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<!-- $$$QXmlEntityResolver-brief -->
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<p>The QXmlEntityResolver class provides an interface to resolve external entities contained in XML data. <a href="#details">More...</a></p>
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<!-- @@@QXmlEntityResolver -->
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<pre class="cpp"> <span class="preprocessor">#include <QXmlEntityResolver></span></pre><p><b>Inherited by: </b><a href="qxmldefaulthandler.html">QXmlDefaultHandler</a>.</p>
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<p><b>Note:</b> All functions in this class are <a href="threads-reentrancy.html#reentrant">reentrant</a>.</p>
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<h2>Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qxmlentityresolver.html#dtor.QXmlEntityResolver">~QXmlEntityResolver</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qxmlentityresolver.html#errorString">errorString</a></b> () const = 0</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlentityresolver.html#resolveEntity">resolveEntity</a></b> ( const QString & <i>publicId</i>, const QString & <i>systemId</i>, QXmlInputSource *& <i>ret</i> ) = 0</td></tr>
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<!-- $$$QXmlEntityResolver-description -->
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<h2>Detailed Description</h2>
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<p>The QXmlEntityResolver class provides an interface to resolve external entities contained in XML data.</p>
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<p>If an application needs to implement customized handling for external entities, it must implement this interface, i.e. <a href="qxmlentityresolver.html#resolveEntity">resolveEntity</a>(), and register it with <a href="qxmlreader.html#setEntityResolver">QXmlReader::setEntityResolver</a>().</p>
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<p><b>See also </b><a href="qxmldtdhandler.html">QXmlDTDHandler</a>, <a href="qxmldeclhandler.html">QXmlDeclHandler</a>, <a href="qxmlcontenthandler.html">QXmlContentHandler</a>, <a href="qxmlerrorhandler.html">QXmlErrorHandler</a>, <a href="qxmllexicalhandler.html">QXmlLexicalHandler</a>, and <a href="xml-sax.html#introduction-to-sax2">Introduction to SAX2</a>.</p>
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<!-- @@@QXmlEntityResolver -->
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<div class="func">
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<h2>Member Function Documentation</h2>
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<!-- $$$~QXmlEntityResolver[overload1]$$$~QXmlEntityResolver -->
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<h3 class="fn"><a name="dtor.QXmlEntityResolver"></a>QXmlEntityResolver::<span class="name">~QXmlEntityResolver</span> ()<tt> [virtual]</tt></h3>
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<p>Destroys the entity resolver.</p>
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<!-- @@@~QXmlEntityResolver -->
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<!-- $$$errorString[overload1]$$$errorString -->
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<h3 class="fn"><a name="errorString"></a><span class="type"><a href="qstring.html">QString</a></span> QXmlEntityResolver::<span class="name">errorString</span> () const<tt> [pure virtual]</tt></h3>
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<p>The reader calls this function to get an error string if any of the handler functions returns false.</p>
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<!-- @@@errorString -->
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<!-- $$$resolveEntity[overload1]$$$resolveEntityconstQString&constQString&QXmlInputSource*& -->
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<h3 class="fn"><a name="resolveEntity"></a><span class="type">bool</span> QXmlEntityResolver::<span class="name">resolveEntity</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>publicId</i>, const <span class="type"><a href="qstring.html">QString</a></span> & <i>systemId</i>, <span class="type"><a href="qxmlinputsource.html">QXmlInputSource</a></span> *& <i>ret</i> )<tt> [pure virtual]</tt></h3>
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<p>The reader calls this function before it opens any external entity, except the top-level document entity. The application may request the reader to resolve the entity itself (<i>ret</i> is 0) or to use an entirely different input source (<i>ret</i> points to the input source).</p>
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<p>The reader deletes the input source <i>ret</i> when it no longer needs it, so you should allocate it on the heap with <tt>new</tt>.</p>
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<p>The argument <i>publicId</i> is the public identifier of the external entity, <i>systemId</i> is the system identifier of the external entity and <i>ret</i> is the return value of this function. If <i>ret</i> is 0 the reader should resolve the entity itself, if it is non-zero it must point to an input source which the reader uses instead.</p>
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<p>If this function returns false the reader stops parsing and reports an error. The reader uses the function <a href="qxmlentityresolver.html#errorString">errorString</a>() to get the error message.</p>
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<!-- @@@resolveEntity -->
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